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Polyester molding composition, preparation method and applications thereof

A molding composition and polyester technology, applied in the field of polyester molding composition and its preparation, can solve the problems of high molding shrinkage, inability to carry out LDS process, low bonding force between LDS material and metal, etc.

Inactive Publication Date: 2018-07-06
ZHUHAI WANTONG SPECIAL ENG PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to solve the above-mentioned shortcomings of low bonding force between the PC matrix LDS material and metal, high molding shrinkage, and the inability of ordinary NMT materials to carry out the LDS process, the primary purpose of the present invention is to provide a polyester molding composition. The composition can not only form a metal-plastic composite with excellent adhesion with the surface-treated metal by injection molding, but also has excellent mechanical properties and good heat resistance, and can selectively deposit metal on the laser-etched area to form an exquisite chemical coating

Method used

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  • Polyester molding composition, preparation method and applications thereof
  • Polyester molding composition, preparation method and applications thereof
  • Polyester molding composition, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-11 and comparative example 1-3

[0079] a. Blend the polyester resin and the impact modifier in a high-speed mixer for 5min-30min according to the ratio in Table 1 to prepare a premix;

[0080] b. Blend the premix obtained in step a, laser-sensitive additives, and other additives in a high-speed mixer for 5min-10min to obtain a blend, and then feed the blend into a twin-screw extruder, reinforcing materials and / or Or the filler adopts side feeding, melt extrusion, cooling, and granulation, and the temperature of the twin-screw extruder is 180-320°C, the screw speed is 60 rpm-1200rpm, and the feeding amount is 20 kg / h-2000kg / h, the gauge pressure of the vacuum pump is -0.05 MPa~-0.12MPa.

[0081] in,

Embodiment 1

[0082] Example 1: In step a, the blending time is 15 minutes. In step b, the temperature of the twin-screw extruder is 200°C-300°C, the screw speed is 350rpm, the feed rate is 500kg / h, and the gauge pressure of the vacuum pump is -0.08 MPa.

Embodiment 2

[0083] Example 2: In step a, the blending time is 10 minutes. In step b, the temperature of the twin-screw extruder is 180°C-320°C, the screw speed is 100rpm, the feed rate is 1100kg / h, and the gauge pressure of the vacuum pump is -0.05 MPa, all the other are with embodiment 1.

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Abstract

The invention discloses a polyester molding composition, a preparation method and applications thereof, wherein the polyester molding composition comprises 30-99.7 parts of a polyester resin, 2-20 parts of an anti-impact modifier, 2-15 parts of a laser sensitive additive, and 0.1-50 parts of a reinforcing material and / or a filler. According to the present invention, the research results show thatthe prepared polyester molding composition and the surface treated metal can form the metal-plastic complex with excellent adhesion through injection molding, wherein the mechanical properties are excellent, the heat resistance is good, the bonding force between the metal and the plastic is greater than 120 kgf, and the requirements of the NMT process on the bonding force between the metal and theplastic can be met; and the prepared polyester molding composition can be used for preparing members for metal deposition, wherein the plating index MI value is more than 0.85, the LDS metal platingperformance is excellent, and the metal can be selectively deposited in the laser etched area so as to form the beautiful chemical plating layer.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polyester molding composition and its preparation method and application. Background technique [0002] Metal-plastic integrated molding technology, also known as nano-injection molding technology (NMT, that is, Nano Molding Technology), is to firstly chemically treat the metal surface, and then directly inject the plastic on the metal surface, so that the metal and plastic can be integrally formed. Taking into account the appearance and texture of metal, it can also simplify the design of product structural parts, making the product lighter, thinner, shorter, and smaller, and it is more cost-effective than CNC technology. NMT technology can reduce the overall weight of the product, ensure the excellent strength of the mechanical structure, high processing speed and output, and more options for appearance decoration methods. Its application range involves vehicles, IT equipment...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/08C08K7/14C08K5/134
Inventor 杨汇鑫龙杰明姜苏俊麦杰鸿蔡立志周广亮钱鑫昌
Owner ZHUHAI WANTONG SPECIAL ENG PLASTICS CO LTD
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